AMD Radeon R9 390 X2 vs AMD Radeon HD 6750

VS

AMD Radeon R9 390 X2

AMD Radeon HD 6750

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 X2 and 1024MB VRAM Radeon HD 6750 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 X2 's Advantages

Released 4 years and 8 months late

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (345.6GB/s vs 73.60GB/s)

1840 additional rendering cores

AMD Radeon HD 6750 's Advantages

Lower TDP (86W vs 580W)

Score

Benchmark

FP32 (float)

Radeon R9 390 X2 +407%

5.12 TFLOPS

Radeon HD 6750

1.008 TFLOPS

Radeon R9 390 X2

VS

Radeon HD 6750

Graphics Card

Sep 2015

Release Date

Jan 2011

Pirate Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1350 MHz

Memory Clock

1150 MHz

Memory

8GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

128bit

345.6GB/s

Bandwidth

73.60GB/s

Render Config

40

Compute Units

9

-

2560

Shading Units

720

160

TMUs

36

64

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

11.20 GPixel/s

160.0 GTexel/s

Texture Rate

25.20 GTexel/s

-

5.120 TFLOPS

FP32 (float)

1008 GFLOPS

640.0 GFLOPS

FP64 (double)

-

Board Design

580W

TDP

86W

950 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

4x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Grenada

GPU Name

Juniper

Grenada PRO (215-0880030)

GPU Variant

Juniper LE (215-0754009)

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

6.2 billion

Transistors

1.04 billion

438 mm²

Die Size

166 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

6.3

Shader Model

5.0

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